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authorcvs2svn <admin@example.com>1999-10-10 21:32:04 +0000
committercvs2svn <admin@example.com>1999-10-10 21:32:04 +0000
commit9b77a555b5e85a4473f23ac7342ddfb4d9ff309d (patch)
treedae5e50679bccd1ed8d7d4041fbb9f3d96bbc98c /src/lib/libcrypto/pkcs7/pk7_doit.c
parent3ef9529fbf0c1f8f1c9da1172e92ad3370d5fcfe (diff)
downloadopenbsd-OPENBSD_2_6.tar.gz
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openbsd-OPENBSD_2_6.zip
This commit was manufactured by cvs2git to create branch 'OPENBSD_2_6'.OPENBSD_2_6
Diffstat (limited to 'src/lib/libcrypto/pkcs7/pk7_doit.c')
-rw-r--r--src/lib/libcrypto/pkcs7/pk7_doit.c922
1 files changed, 0 insertions, 922 deletions
diff --git a/src/lib/libcrypto/pkcs7/pk7_doit.c b/src/lib/libcrypto/pkcs7/pk7_doit.c
deleted file mode 100644
index dee81b547a..0000000000
--- a/src/lib/libcrypto/pkcs7/pk7_doit.c
+++ /dev/null
@@ -1,922 +0,0 @@
1/* crypto/pkcs7/pk7_doit.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60#include "cryptlib.h"
61#include <openssl/rand.h>
62#include <openssl/objects.h>
63#include <openssl/x509.h>
64
65static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
66 void *value);
67static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid);
68
69BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
70 {
71 int i,j;
72 BIO *out=NULL,*btmp=NULL;
73 X509_ALGOR *xa;
74 const EVP_MD *evp_md;
75 const EVP_CIPHER *evp_cipher=NULL;
76 STACK_OF(X509_ALGOR) *md_sk=NULL;
77 STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
78 X509_ALGOR *xalg=NULL;
79 PKCS7_RECIP_INFO *ri=NULL;
80 EVP_PKEY *pkey;
81
82 i=OBJ_obj2nid(p7->type);
83 p7->state=PKCS7_S_HEADER;
84
85 switch (i)
86 {
87 case NID_pkcs7_signed:
88 md_sk=p7->d.sign->md_algs;
89 break;
90 case NID_pkcs7_signedAndEnveloped:
91 rsk=p7->d.signed_and_enveloped->recipientinfo;
92 md_sk=p7->d.signed_and_enveloped->md_algs;
93 xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
94 evp_cipher=p7->d.signed_and_enveloped->enc_data->cipher;
95 if (evp_cipher == NULL)
96 {
97 PKCS7err(PKCS7_F_PKCS7_DATAINIT,
98 PKCS7_R_CIPHER_NOT_INITIALIZED);
99 goto err;
100 }
101 break;
102 case NID_pkcs7_enveloped:
103 rsk=p7->d.enveloped->recipientinfo;
104 xalg=p7->d.enveloped->enc_data->algorithm;
105 evp_cipher=p7->d.enveloped->enc_data->cipher;
106 if (evp_cipher == NULL)
107 {
108 PKCS7err(PKCS7_F_PKCS7_DATAINIT,
109 PKCS7_R_CIPHER_NOT_INITIALIZED);
110 goto err;
111 }
112 break;
113 default:
114 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
115 goto err;
116 }
117
118 if (md_sk != NULL)
119 {
120 for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
121 {
122 xa=sk_X509_ALGOR_value(md_sk,i);
123 if ((btmp=BIO_new(BIO_f_md())) == NULL)
124 {
125 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
126 goto err;
127 }
128
129 j=OBJ_obj2nid(xa->algorithm);
130 evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
131 if (evp_md == NULL)
132 {
133 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNKNOWN_DIGEST_TYPE);
134 goto err;
135 }
136
137 BIO_set_md(btmp,evp_md);
138 if (out == NULL)
139 out=btmp;
140 else
141 BIO_push(out,btmp);
142 btmp=NULL;
143 }
144 }
145
146 if (evp_cipher != NULL)
147 {
148 unsigned char key[EVP_MAX_KEY_LENGTH];
149 unsigned char iv[EVP_MAX_IV_LENGTH];
150 int keylen,ivlen;
151 int jj,max;
152 unsigned char *tmp;
153 EVP_CIPHER_CTX *ctx;
154
155 if ((btmp=BIO_new(BIO_f_cipher())) == NULL)
156 {
157 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
158 goto err;
159 }
160 BIO_get_cipher_ctx(btmp, &ctx);
161 keylen=EVP_CIPHER_key_length(evp_cipher);
162 ivlen=EVP_CIPHER_iv_length(evp_cipher);
163 RAND_bytes(key,keylen);
164 xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher));
165 if (ivlen > 0) RAND_bytes(iv,ivlen);
166 EVP_CipherInit(ctx, evp_cipher, key, iv, 1);
167
168 if (ivlen > 0) {
169 if (xalg->parameter == NULL)
170 xalg->parameter=ASN1_TYPE_new();
171 if(EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0)
172 goto err;
173 }
174
175 /* Lets do the pub key stuff :-) */
176 max=0;
177 for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
178 {
179 ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
180 if (ri->cert == NULL)
181 {
182 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_MISSING_CERIPEND_INFO);
183 goto err;
184 }
185 pkey=X509_get_pubkey(ri->cert);
186 jj=EVP_PKEY_size(pkey);
187 EVP_PKEY_free(pkey);
188 if (max < jj) max=jj;
189 }
190 if ((tmp=(unsigned char *)Malloc(max)) == NULL)
191 {
192 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_MALLOC_FAILURE);
193 goto err;
194 }
195 for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
196 {
197 ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
198 pkey=X509_get_pubkey(ri->cert);
199 jj=EVP_PKEY_encrypt(tmp,key,keylen,pkey);
200 EVP_PKEY_free(pkey);
201 if (jj <= 0)
202 {
203 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_EVP_LIB);
204 Free(tmp);
205 goto err;
206 }
207 ASN1_OCTET_STRING_set(ri->enc_key,tmp,jj);
208 }
209 Free(tmp);
210 memset(key, 0, keylen);
211
212 if (out == NULL)
213 out=btmp;
214 else
215 BIO_push(out,btmp);
216 btmp=NULL;
217 }
218
219 if (bio == NULL) /* ??????????? */
220 {
221 if (p7->detached)
222 bio=BIO_new(BIO_s_null());
223 else
224 {
225 bio=BIO_new(BIO_s_mem());
226 /* We need to set this so that when we have read all
227 * the data, the encrypt BIO, if present, will read
228 * EOF and encode the last few bytes */
229 BIO_set_mem_eof_return(bio,0);
230
231 if (PKCS7_type_is_signed(p7) &&
232 PKCS7_type_is_data(p7->d.sign->contents))
233 {
234 ASN1_OCTET_STRING *os;
235
236 os=p7->d.sign->contents->d.data;
237 if (os->length > 0)
238 BIO_write(bio,(char *)os->data,
239 os->length);
240 }
241 }
242 }
243 BIO_push(out,bio);
244 bio=NULL;
245 if (0)
246 {
247err:
248 if (out != NULL)
249 BIO_free_all(out);
250 if (btmp != NULL)
251 BIO_free_all(btmp);
252 out=NULL;
253 }
254 return(out);
255 }
256
257/* int */
258BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
259 {
260 int i,j;
261 BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL;
262 char *tmp=NULL;
263 X509_ALGOR *xa;
264 ASN1_OCTET_STRING *data_body=NULL;
265 const EVP_MD *evp_md;
266 const EVP_CIPHER *evp_cipher=NULL;
267 EVP_CIPHER_CTX *evp_ctx=NULL;
268 X509_ALGOR *enc_alg=NULL;
269 STACK_OF(X509_ALGOR) *md_sk=NULL;
270 STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
271 X509_ALGOR *xalg=NULL;
272 PKCS7_RECIP_INFO *ri=NULL;
273/* EVP_PKEY *pkey; */
274#if 0
275 X509_STORE_CTX s_ctx;
276#endif
277
278 i=OBJ_obj2nid(p7->type);
279 p7->state=PKCS7_S_HEADER;
280
281 switch (i)
282 {
283 case NID_pkcs7_signed:
284 data_body=p7->d.sign->contents->d.data;
285 md_sk=p7->d.sign->md_algs;
286 break;
287 case NID_pkcs7_signedAndEnveloped:
288 rsk=p7->d.signed_and_enveloped->recipientinfo;
289 md_sk=p7->d.signed_and_enveloped->md_algs;
290 data_body=p7->d.signed_and_enveloped->enc_data->enc_data;
291 enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm;
292 evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
293 if (evp_cipher == NULL)
294 {
295 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
296 goto err;
297 }
298 xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
299 break;
300 case NID_pkcs7_enveloped:
301 rsk=p7->d.enveloped->recipientinfo;
302 enc_alg=p7->d.enveloped->enc_data->algorithm;
303 data_body=p7->d.enveloped->enc_data->enc_data;
304 evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
305 if (evp_cipher == NULL)
306 {
307 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
308 goto err;
309 }
310 xalg=p7->d.enveloped->enc_data->algorithm;
311 break;
312 default:
313 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
314 goto err;
315 }
316
317 /* We will be checking the signature */
318 if (md_sk != NULL)
319 {
320 for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
321 {
322 xa=sk_X509_ALGOR_value(md_sk,i);
323 if ((btmp=BIO_new(BIO_f_md())) == NULL)
324 {
325 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
326 goto err;
327 }
328
329 j=OBJ_obj2nid(xa->algorithm);
330 evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
331 if (evp_md == NULL)
332 {
333 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);
334 goto err;
335 }
336
337 BIO_set_md(btmp,evp_md);
338 if (out == NULL)
339 out=btmp;
340 else
341 BIO_push(out,btmp);
342 btmp=NULL;
343 }
344 }
345
346 if (evp_cipher != NULL)
347 {
348#if 0
349 unsigned char key[EVP_MAX_KEY_LENGTH];
350 unsigned char iv[EVP_MAX_IV_LENGTH];
351 unsigned char *p;
352 int keylen,ivlen;
353 int max;
354 X509_OBJECT ret;
355#endif
356 int jj;
357
358 if ((etmp=BIO_new(BIO_f_cipher())) == NULL)
359 {
360 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
361 goto err;
362 }
363
364 /* It was encrypted, we need to decrypt the secret key
365 * with the private key */
366
367 /* Find the recipientInfo which matches the passed certificate
368 * (if any)
369 */
370
371 for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) {
372 ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
373 if(!X509_NAME_cmp(ri->issuer_and_serial->issuer,
374 pcert->cert_info->issuer) &&
375 !ASN1_INTEGER_cmp(pcert->cert_info->serialNumber,
376 ri->issuer_and_serial->serial)) break;
377 ri=NULL;
378 }
379 if (ri == NULL) {
380 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
381 PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE);
382 return(NULL);
383 }
384
385 jj=EVP_PKEY_size(pkey);
386 tmp=Malloc(jj+10);
387 if (tmp == NULL)
388 {
389 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_MALLOC_FAILURE);
390 goto err;
391 }
392
393 jj=EVP_PKEY_decrypt((unsigned char *)tmp,
394 ASN1_STRING_data(ri->enc_key),
395 ASN1_STRING_length(ri->enc_key),
396 pkey);
397 if (jj <= 0)
398 {
399 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_EVP_LIB);
400 goto err;
401 }
402
403 evp_ctx=NULL;
404 BIO_get_cipher_ctx(etmp,&evp_ctx);
405 EVP_CipherInit(evp_ctx,evp_cipher,NULL,NULL,0);
406 if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0)
407 return(NULL);
408
409 if (jj != EVP_CIPHER_CTX_key_length(evp_ctx))
410 {
411 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
412 PKCS7_R_DECRYPTED_KEY_IS_WRONG_LENGTH);
413 goto err;
414 }
415 EVP_CipherInit(evp_ctx,NULL,(unsigned char *)tmp,NULL,0);
416
417 memset(tmp,0,jj);
418
419 if (out == NULL)
420 out=etmp;
421 else
422 BIO_push(out,etmp);
423 etmp=NULL;
424 }
425
426#if 1
427 if (p7->detached || (in_bio != NULL))
428 {
429 bio=in_bio;
430 }
431 else
432 {
433 bio=BIO_new(BIO_s_mem());
434 /* We need to set this so that when we have read all
435 * the data, the encrypt BIO, if present, will read
436 * EOF and encode the last few bytes */
437 BIO_set_mem_eof_return(bio,0);
438
439 if (data_body->length > 0)
440 BIO_write(bio,(char *)data_body->data,data_body->length);
441 }
442 BIO_push(out,bio);
443 bio=NULL;
444#endif
445 if (0)
446 {
447err:
448 if (out != NULL) BIO_free_all(out);
449 if (btmp != NULL) BIO_free_all(btmp);
450 if (etmp != NULL) BIO_free_all(etmp);
451 if (bio != NULL) BIO_free_all(bio);
452 out=NULL;
453 }
454 if (tmp != NULL)
455 Free(tmp);
456 return(out);
457 }
458
459int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
460 {
461 int ret=0;
462 int i,j;
463 BIO *btmp;
464 BUF_MEM *buf_mem=NULL;
465 BUF_MEM *buf=NULL;
466 PKCS7_SIGNER_INFO *si;
467 EVP_MD_CTX *mdc,ctx_tmp;
468 STACK_OF(X509_ATTRIBUTE) *sk;
469 STACK_OF(PKCS7_SIGNER_INFO) *si_sk=NULL;
470 unsigned char *p,*pp=NULL;
471 int x;
472 ASN1_OCTET_STRING *os=NULL;
473
474 i=OBJ_obj2nid(p7->type);
475 p7->state=PKCS7_S_HEADER;
476
477 switch (i)
478 {
479 case NID_pkcs7_signedAndEnveloped:
480 /* XXXXXXXXXXXXXXXX */
481 si_sk=p7->d.signed_and_enveloped->signer_info;
482 os=ASN1_OCTET_STRING_new();
483 p7->d.signed_and_enveloped->enc_data->enc_data=os;
484 break;
485 case NID_pkcs7_enveloped:
486 /* XXXXXXXXXXXXXXXX */
487 os=ASN1_OCTET_STRING_new();
488 p7->d.enveloped->enc_data->enc_data=os;
489 break;
490 case NID_pkcs7_signed:
491 si_sk=p7->d.sign->signer_info;
492 os=p7->d.sign->contents->d.data;
493 /* If detached data then the content is excluded */
494 if(p7->detached) {
495 ASN1_OCTET_STRING_free(os);
496 p7->d.sign->contents->d.data = NULL;
497 }
498 break;
499 }
500
501 if (si_sk != NULL)
502 {
503 if ((buf=BUF_MEM_new()) == NULL)
504 {
505 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB);
506 goto err;
507 }
508 for (i=0; i<sk_PKCS7_SIGNER_INFO_num(si_sk); i++)
509 {
510 si=sk_PKCS7_SIGNER_INFO_value(si_sk,i);
511 if (si->pkey == NULL) continue;
512
513 j=OBJ_obj2nid(si->digest_alg->algorithm);
514
515 btmp=bio;
516 for (;;)
517 {
518 if ((btmp=BIO_find_type(btmp,BIO_TYPE_MD))
519 == NULL)
520 {
521 PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
522 goto err;
523 }
524 BIO_get_md_ctx(btmp,&mdc);
525 if (mdc == NULL)
526 {
527 PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_INTERNAL_ERROR);
528 goto err;
529 }
530 if (EVP_MD_type(EVP_MD_CTX_type(mdc)) == j)
531 break;
532 else
533 btmp=btmp->next_bio;
534 }
535
536 /* We now have the EVP_MD_CTX, lets do the
537 * signing. */
538 memcpy(&ctx_tmp,mdc,sizeof(ctx_tmp));
539 if (!BUF_MEM_grow(buf,EVP_PKEY_size(si->pkey)))
540 {
541 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB);
542 goto err;
543 }
544
545 sk=si->auth_attr;
546
547 /* If there are attributes, we add the digest
548 * attribute and only sign the attributes */
549 if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
550 {
551 unsigned char md_data[EVP_MAX_MD_SIZE];
552 unsigned int md_len;
553 ASN1_OCTET_STRING *digest;
554 ASN1_UTCTIME *sign_time;
555 const EVP_MD *md_tmp;
556
557 /* Add signing time */
558 sign_time=X509_gmtime_adj(NULL,0);
559 PKCS7_add_signed_attribute(si,
560 NID_pkcs9_signingTime,
561 V_ASN1_UTCTIME,sign_time);
562
563 /* Add digest */
564 md_tmp=EVP_MD_CTX_type(&ctx_tmp);
565 EVP_DigestFinal(&ctx_tmp,md_data,&md_len);
566 digest=ASN1_OCTET_STRING_new();
567 ASN1_OCTET_STRING_set(digest,md_data,md_len);
568 PKCS7_add_signed_attribute(si,
569 NID_pkcs9_messageDigest,
570 V_ASN1_OCTET_STRING,digest);
571
572 /* Now sign the mess */
573 EVP_SignInit(&ctx_tmp,md_tmp);
574 x=i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,NULL,
575 i2d_X509_ATTRIBUTE,
576 V_ASN1_SET,V_ASN1_UNIVERSAL,IS_SET);
577 pp=(unsigned char *)Malloc(x);
578 p=pp;
579 i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,&p,
580 i2d_X509_ATTRIBUTE,
581 V_ASN1_SET,V_ASN1_UNIVERSAL,IS_SET);
582 EVP_SignUpdate(&ctx_tmp,pp,x);
583 Free(pp);
584 pp=NULL;
585 }
586
587 if (si->pkey->type == EVP_PKEY_DSA)
588 ctx_tmp.digest=EVP_dss1();
589
590 if (!EVP_SignFinal(&ctx_tmp,(unsigned char *)buf->data,
591 (unsigned int *)&buf->length,si->pkey))
592 {
593 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_EVP_LIB);
594 goto err;
595 }
596 if (!ASN1_STRING_set(si->enc_digest,
597 (unsigned char *)buf->data,buf->length))
598 {
599 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_ASN1_LIB);
600 goto err;
601 }
602 }
603 }
604
605 if (!p7->detached)
606 {
607 btmp=BIO_find_type(bio,BIO_TYPE_MEM);
608 if (btmp == NULL)
609 {
610 PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
611 goto err;
612 }
613 BIO_get_mem_ptr(btmp,&buf_mem);
614 ASN1_OCTET_STRING_set(os,
615 (unsigned char *)buf_mem->data,buf_mem->length);
616 }
617 if (pp != NULL) Free(pp);
618 pp=NULL;
619
620 ret=1;
621err:
622 if (buf != NULL) BUF_MEM_free(buf);
623 return(ret);
624 }
625
626int PKCS7_dataVerify(X509_STORE *cert_store, X509_STORE_CTX *ctx, BIO *bio,
627 PKCS7 *p7, PKCS7_SIGNER_INFO *si)
628 {
629 PKCS7_ISSUER_AND_SERIAL *ias;
630 int ret=0,i;
631 STACK_OF(X509) *cert;
632 X509 *x509;
633
634 if (PKCS7_type_is_signed(p7))
635 {
636 cert=p7->d.sign->cert;
637 }
638 else if (PKCS7_type_is_signedAndEnveloped(p7))
639 {
640 cert=p7->d.signed_and_enveloped->cert;
641 }
642 else
643 {
644 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_WRONG_PKCS7_TYPE);
645 goto err;
646 }
647 /* XXXXXXXXXXXXXXXXXXXXXXX */
648 ias=si->issuer_and_serial;
649
650 x509=X509_find_by_issuer_and_serial(cert,ias->issuer,ias->serial);
651
652 /* were we able to find the cert in passed to us */
653 if (x509 == NULL)
654 {
655 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_CERTIFICATE);
656 goto err;
657 }
658
659 /* Lets verify */
660 X509_STORE_CTX_init(ctx,cert_store,x509,cert);
661 i=X509_verify_cert(ctx);
662 if (i <= 0)
663 {
664 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
665 goto err;
666 }
667 X509_STORE_CTX_cleanup(ctx);
668
669 return PKCS7_signatureVerify(bio, p7, si, x509);
670 err:
671 return ret;
672 }
673
674int PKCS7_signatureVerify(BIO *bio, PKCS7 *p7, PKCS7_SIGNER_INFO *si,
675 X509 *x509)
676 {
677 ASN1_OCTET_STRING *os;
678 EVP_MD_CTX mdc_tmp,*mdc;
679 unsigned char *pp,*p;
680 int ret=0,i;
681 int md_type;
682 STACK_OF(X509_ATTRIBUTE) *sk;
683 BIO *btmp;
684 EVP_PKEY *pkey;
685
686 if (!PKCS7_type_is_signed(p7) &&
687 !PKCS7_type_is_signedAndEnveloped(p7)) {
688 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
689 PKCS7_R_WRONG_PKCS7_TYPE);
690 goto err;
691 }
692
693 md_type=OBJ_obj2nid(si->digest_alg->algorithm);
694
695 btmp=bio;
696 for (;;)
697 {
698 if ((btmp == NULL) ||
699 ((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL))
700 {
701 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
702 PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
703 goto err;
704 }
705 BIO_get_md_ctx(btmp,&mdc);
706 if (mdc == NULL)
707 {
708 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
709 PKCS7_R_INTERNAL_ERROR);
710 goto err;
711 }
712 if (EVP_MD_type(EVP_MD_CTX_type(mdc)) == md_type)
713 break;
714 btmp=btmp->next_bio;
715 }
716
717 /* mdc is the digest ctx that we want, unless there are attributes,
718 * in which case the digest is the signed attributes */
719 memcpy(&mdc_tmp,mdc,sizeof(mdc_tmp));
720
721 sk=si->auth_attr;
722 if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
723 {
724 unsigned char md_dat[EVP_MAX_MD_SIZE];
725 unsigned int md_len;
726 ASN1_OCTET_STRING *message_digest;
727
728 EVP_DigestFinal(&mdc_tmp,md_dat,&md_len);
729 message_digest=PKCS7_digest_from_attributes(sk);
730 if (!message_digest)
731 {
732 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
733 PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
734 goto err;
735 }
736 if ((message_digest->length != (int)md_len) ||
737 (memcmp(message_digest->data,md_dat,md_len)))
738 {
739#if 0
740{
741int ii;
742for (ii=0; ii<message_digest->length; ii++)
743 printf("%02X",message_digest->data[ii]); printf(" sent\n");
744for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n");
745}
746#endif
747 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
748 PKCS7_R_DIGEST_FAILURE);
749 ret= -1;
750 goto err;
751 }
752
753 EVP_VerifyInit(&mdc_tmp,EVP_get_digestbynid(md_type));
754 /* Note: when forming the encoding of the attributes we
755 * shouldn't reorder them or this will break the signature.
756 * This is done by using the IS_SEQUENCE flag.
757 */
758 i=i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,NULL,i2d_X509_ATTRIBUTE,
759 V_ASN1_SET,V_ASN1_UNIVERSAL, IS_SEQUENCE);
760 pp=Malloc(i);
761 p=pp;
762 i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,&p,i2d_X509_ATTRIBUTE,
763 V_ASN1_SET,V_ASN1_UNIVERSAL, IS_SEQUENCE);
764 EVP_VerifyUpdate(&mdc_tmp,pp,i);
765
766 Free(pp);
767 }
768
769 os=si->enc_digest;
770 pkey = X509_get_pubkey(x509);
771 if(pkey->type == EVP_PKEY_DSA) mdc_tmp.digest=EVP_dss1();
772
773 i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, pkey);
774 EVP_PKEY_free(pkey);
775 if (i <= 0)
776 {
777 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
778 PKCS7_R_SIGNATURE_FAILURE);
779 ret= -1;
780 goto err;
781 }
782 else
783 ret=1;
784err:
785 return(ret);
786 }
787
788PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx)
789 {
790 STACK_OF(PKCS7_RECIP_INFO) *rsk;
791 PKCS7_RECIP_INFO *ri;
792 int i;
793
794 i=OBJ_obj2nid(p7->type);
795 if (i != NID_pkcs7_signedAndEnveloped) return(NULL);
796 rsk=p7->d.signed_and_enveloped->recipientinfo;
797 ri=sk_PKCS7_RECIP_INFO_value(rsk,0);
798 if (sk_PKCS7_RECIP_INFO_num(rsk) <= idx) return(NULL);
799 ri=sk_PKCS7_RECIP_INFO_value(rsk,idx);
800 return(ri->issuer_and_serial);
801 }
802
803ASN1_TYPE *PKCS7_get_signed_attribute(PKCS7_SIGNER_INFO *si, int nid)
804 {
805 return(get_attribute(si->auth_attr,nid));
806 }
807
808ASN1_TYPE *PKCS7_get_attribute(PKCS7_SIGNER_INFO *si, int nid)
809 {
810 return(get_attribute(si->unauth_attr,nid));
811 }
812
813static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid)
814 {
815 int i;
816 X509_ATTRIBUTE *xa;
817 ASN1_OBJECT *o;
818
819 o=OBJ_nid2obj(nid);
820 if (!o || !sk) return(NULL);
821 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
822 {
823 xa=sk_X509_ATTRIBUTE_value(sk,i);
824 if (OBJ_cmp(xa->object,o) == 0)
825 {
826 if (xa->set && sk_ASN1_TYPE_num(xa->value.set))
827 return(sk_ASN1_TYPE_value(xa->value.set,0));
828 else
829 return(NULL);
830 }
831 }
832 return(NULL);
833 }
834
835ASN1_OCTET_STRING *PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE) *sk)
836{
837 ASN1_TYPE *astype;
838 if(!(astype = get_attribute(sk, NID_pkcs9_messageDigest))) return NULL;
839 return astype->value.octet_string;
840}
841
842int PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO *p7si,
843 STACK_OF(X509_ATTRIBUTE) *sk)
844 {
845 int i;
846
847 if (p7si->auth_attr != NULL)
848 sk_X509_ATTRIBUTE_pop_free(p7si->auth_attr,X509_ATTRIBUTE_free);
849 p7si->auth_attr=sk_X509_ATTRIBUTE_dup(sk);
850 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
851 {
852 if ((sk_X509_ATTRIBUTE_set(p7si->auth_attr,i,
853 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
854 == NULL)
855 return(0);
856 }
857 return(1);
858 }
859
860int PKCS7_set_attributes(PKCS7_SIGNER_INFO *p7si, STACK_OF(X509_ATTRIBUTE) *sk)
861 {
862 int i;
863
864 if (p7si->unauth_attr != NULL)
865 sk_X509_ATTRIBUTE_pop_free(p7si->unauth_attr,
866 X509_ATTRIBUTE_free);
867 p7si->unauth_attr=sk_X509_ATTRIBUTE_dup(sk);
868 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
869 {
870 if ((sk_X509_ATTRIBUTE_set(p7si->unauth_attr,i,
871 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
872 == NULL)
873 return(0);
874 }
875 return(1);
876 }
877
878int PKCS7_add_signed_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
879 void *value)
880 {
881 return(add_attribute(&(p7si->auth_attr),nid,atrtype,value));
882 }
883
884int PKCS7_add_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
885 void *value)
886 {
887 return(add_attribute(&(p7si->unauth_attr),nid,atrtype,value));
888 }
889
890static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
891 void *value)
892 {
893 X509_ATTRIBUTE *attr=NULL;
894
895 if (*sk == NULL)
896 {
897 *sk = sk_X509_ATTRIBUTE_new(NULL);
898new_attrib:
899 attr=X509_ATTRIBUTE_create(nid,atrtype,value);
900 sk_X509_ATTRIBUTE_push(*sk,attr);
901 }
902 else
903 {
904 int i;
905
906 for (i=0; i<sk_X509_ATTRIBUTE_num(*sk); i++)
907 {
908 attr=sk_X509_ATTRIBUTE_value(*sk,i);
909 if (OBJ_obj2nid(attr->object) == nid)
910 {
911 X509_ATTRIBUTE_free(attr);
912 attr=X509_ATTRIBUTE_create(nid,atrtype,value);
913 sk_X509_ATTRIBUTE_set(*sk,i,attr);
914 goto end;
915 }
916 }
917 goto new_attrib;
918 }
919end:
920 return(1);
921 }
922
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-08-10 01:13:13 +0000